The Army will try to keep you guys together under the Army Couples plan but taht always can't happen. There could be times that one will deploy return home and then the other will deploy. Or you both could be sent to different bases because one of your MOSs is not needed at one base. The Army will try though but mission first.
You really think that the both of you together will make $200,000. NO WAY. NOT EVEN CLOSE. Especially if you both start off as E1's. You might do close to $55,000-65,000.
Good luck